GETGID(2) BSD System Calls Manual GETGID(2)

NAME
     ggeetteeggiidd, ggeettggiidd - get group process identification

SYNOPSIS
     ##iinncclluuddee <>

     gidt
     ggeetteeggiidd(void);

     gidt
     ggeettggiidd(void);

DESCRIPTION
     The ggeettggiidd() function returns the real group ID of the calling process,
     ggeetteeggiidd() returns the effective group ID of the calling process.

     The real group ID is specified at login time.

     The real group ID is the group of the user who invoked the program.  As
     the effective group ID gives the process additional permissions during
     the execution of ``set-group-ID'' mode processes, ggeettggiidd() is used to
     determine the real-user-id of the calling process.

EERRRROORRSS
     The ggeettggiidd() and ggeetteeggiidd() functions are always successful; no return
     value is reserved to indicate an error.

LEGACY SYNOPSIS
     ##iinncclluuddee <>
     ##iinncclluuddee <>

     The include file  is necessary.

SEE ALSO
     getuid(2), setregid(2), setgid(3)

STANDARDS
     GGeettggiidd() and ggeetteeggiidd() conform to IEEE Std 1003.1-1988 (``POSIX.1'').

4.2 Berkeley Distribution        June 4, 1993        4.2 Berkeley Distribution